10034-93-2

Basic information

• Product Name: Hydrazine sulfate
• Synonyms: HYDRAZINIUM SULFATE GR FOR ANALYSIS ACS;Hydrazine sulfate salt 99.999% trace metals basis;Hydrazine sulfate salt ACS reagent, >=99.0%;Hydrazine sulfate salt puriss. p.a., ACS reagent, >=99.0%;Hydrazine sulfate salt Vetec(TM) reagent grade, 97%;Diamine sulfate hydrazine sulfate;Hydrazine sulfate salt Diamine sulfate Hydrazine sulfate;Hydrazinium sulfate GR for analysis ACS,Reag. Ph Eur
• CAS NO: 10034-93-2
• Molecular Formula: HO₄S*H₅N₂
• Molecular Weight: 130.12
• EINECS: 233-110-4
• Product Categories: ACS Grade;Essential Chemicals;Inorganic Salts;Research Essentials;Solutions and Reagents;Pharmaceutical Intermediates;Inorganics;ACS GradeOrganic Building Blocks;Essential Chemicals;Hydrazines;Nitrogen Compounds;Routine Reagents;Organic Building Blocks;Analytical Reagents for General Use;E-L, Puriss p.a. ACS;Puriss p.a. ACS;Building Blocks;Chemical Synthesis;Nitrogen Compounds;Organic Building Blocks
• Mol File: 10034-93-2.mol

Chemical Properties

• Melting Point: 254 °C(lit.)
• Boiling Point: 330 °C at 760 mmHg
• Appearance: White/Crystalline Powder
• Density: 1,37 g/cm3
• Vapor Pressure: 3.35E-05mmHg at 25°C
• Storage Temp.: Storage temperature: no restrictions.
• Solubility: 30g/l
• Water Solubility: 30 g/L (20 ºC)
• Stability: Stable. Incompatible with nitrites, strong oxidizing agents.
• Merck: 14,4772
• BRN: 8778859
• CAS DataBase Reference: Hydrazine sulfate(CAS DataBase Reference)
• NIST Chemistry Reference: Hydrazine sulfate(10034-93-2)
• EPA Substance Registry System: Hydrazine sulfate(10034-93-2)

Safety Data

• Hazard Codes: T,N
• Statements: 45-23/24/25-43-50/53-35
• Safety Statements: 53-45-60-61-36/37/39-26
• RIDADR: UN 2923 8/PG 3
• WGK Germany: 3
• RTECS: MV9625000
• TSCA: Yes
• HazardClass: 8
• PackingGroup: II
• Hazardous Substances Data: 10034-93-2(Hazardous Substances Data)

Usage

Chemical properties

It is colorless scaly crystal or orthorhombic crystal. It is tasteless. It is slightly soluble in water, soluble in water, acidic aqueous solution. It is insoluble in alcohol.

Uses

Different sources of media describe the Uses of 10034-93-2 differently. You can refer to the following data:
1. 1. It can be used as analytical reagent and reducing agent, it can also be used for the purification of rare metals. 2. It can be used as raw material for the manufacture of pharmaceutical. It can be used as raw material for azobisisobutyronitrile and other products in organic industry. It can be used as reducing agent on the plating. It can be used as insecticide, sterilizing agent in agriculture. It can be used as blowing agents in plastics and rubber. 3. It can be used for weight determination of nickel, cobalt and cadmium, purification of rare metals, reducing agents, organic synthesis, separation of polonium and tellurium, determination of hypochlorite, hypochlorous acid and carboxyl compounds, thymol turbidity is prepared in liver function tests. It can be used for isoniazid, nitrofurazone, 100 Health hydrazine, anhydrous hydrazine, pesticides and fungicides, for rocket fuel processing, anti-rust products, manufacture of ADC foaming agent. It is widely used in medicine, organic synthesis, pesticides, plastics, rubber and other industries. The above information is edited by the lookchem of Wang Xiaodong.
2. Hydrazine sulfate is used in the gravimetric estimation of nickel, cobalt and cadmium; in the refining of rare metals; as an antioxidant in soldering flux for light metals; as a reducing agent in the analysis of minerals and slags; in separating polonium from tellurium; in tests for blood; for destroying fungi and molds; in the preparation of hydrazine hydrate; press ure stabilizer in cutting oils.
3. Reagent for determination of C-terminal amino acidsHydrazine sulfate is used in analytical chemistry for the gravimetric estimation of nickel, cobalt and cadmium. It is also used in the refining of rare metals as well as in the separation of polonium from tellurium. It finds application in the synthesis of chemical intermediate and organic compounds. Further, it acts as an antioxidant in soldering flux for light metals and as a precursor to hydrazine.
4. In the gravimetric estimation of nickel, cobalt and cadmium; in the refining of rare metals; as antioxidant in soldering flux for light metals; as reducing agent in the analysis of minerals and slags; in separating polonium from tellurium; in tests for blood; for destroying fungi and molds; in the preparation of hydrazine hydrate.

Production method

Urea method: Urea, sodium hypochlorite, caustic soda, in the presence of potassium permanganate can react, by distillation, and then reacts with sulfuric acid for neutralization, the resultant passes through cooling and crystallization, filtration, drying to obtain hydrazine sulfate products. NaOCI + NH2CONH2 + 2NaOH [KMnO4] → N2H4·H2O + NaCl + Na2CO3 N2H4·H2O + H2SO4 → N2H4·H2SO4 + H2O

Chemical Properties

colourless crystals or white powder

Physical properties

Colorless orthorhombic crystal; density 1.378 g/cm3; melts at 254°C; sparingly soluble in cold water 1.64% at 0°C and 3.41% at 25°C; more soluble inhot water; practically insoluble in alcohol (0.04% at 25°C).

Preparation

Hydrazine sulfate may be synthesized from aqueous ammonia and sodium hypochlorite solution in a two-step process. In the first stage, aqueous solution of ammonia is boiled with a normal solution of sodium hypochlorite in the presence of 10% gelatin solution to yield hydrazine. In the second stage, the hydrazine solution is ice-cooled followed by slow addition of concentrated sulfuric acid (Adams, R., and B.K. Brown. 1964. In Organic Synthesis, Collective Volume I, ed. H. Gilman and A. H. Blatt, 2nd ed. pp 309-310, New York: John Wiley & Sons). The reaction steps are as follows: 2NH3 + NaOCl → NH2NH2 + H2O + NaCl NH2NH2 + H2SO4 → NH2NH2 ?H2SO4

General Description

Hydrazine sulfate salt is a potential anticachexia agent for treating cancer patients.

Hazard

A carcinogen (OSHA).

Carcinogenicity

Hydrazine and hydrazine sulfate are reasonably anticipated to be human carcinogens based on sufficient evidence of carcinogenicity from studies in experimental animals.

Purification Methods

Its solubility in H2O is 3% at room temperature, but is very soluble in hot H2O. It is a suspected carcinogen. [Adams & Brown Org Synth Coll Vol I 309 1941, Audrieth & Nickles Inorg Synth I 90 1939.]

InChI:InChI=1/H4N2.H2O4S/c1-2;1-5(2,3)4/h1-2H2;(H2,1,2,3,4)/p-2

Synthetic route

nitroguanidine (556-88-7) → ammonia (7664-41-7) + hydrazinium sulfate (10034-93-2)

Conditions	Yield
With sodium hydroxide In acetic acid byproducts: Na2CO3; redn. in presence of Zn dust than reflux with NaOH for 8-10 h; cooling; react. with H2SO4;	A n/a B 90%
With sodium hydroxide In acetic acid byproducts: Na2CO3; redn. in presence of Zn dust than reflux with NaOH for 8-10 h; cooling; react. with H2SO4;	A n/a B 90%

1,4-dihydro-1,2,4,5-tetrazine-3,6-dicarboxylic acid (3787-09-5) → hydrazinium sulfate (10034-93-2) + hydrazine (302-01-2)

Conditions	Yield
With sulfuric acid In water byproducts: CO2; heating; isolation with benzaldehyde, distn. with steam;

nitrogen (7727-37-9) → ammonium sulfate + hydrazinium sulfate (10034-93-2)

Conditions	Yield
With H2SO4; [MoCl(O)(1,2-bis(diphenylphosphino)ethane)]Cl In methanol other Radiation; γ-radiation of soln. of Mo-complex in MeOH and H2SO4 (under const. satn. of N2);

sulfuric acid (7664-93-9) → hydrazinium sulfate (10034-93-2)

Conditions	Yield
With OC(NH)2(NH)2CO byproducts: CO2; dissolving paraunazine at 80°C in concd. H2SO4; 95-130°C, evaluation of CO2;
With OC(NH)2(NH)2CO byproducts: CO2; dissolving paraunazine at 80°C in concd. H2SO4; 95-130°C, evaluation of CO2;

sulfuric acid (7664-93-9) + ammonia (7664-41-7) → hydrazinium sulfate (10034-93-2)

Conditions	Yield
With sodium hydroxide; chlorine In water addition of Cl2 to NaOH soln.; adding saturated NH3 soln. and gelatine; evapn. to half volume; addition of H2SO4 to cooled soln.; precipitn. with alcohol;
With NaClO; NaOH In water in presence of gelatine, addn. of H2SO4 in ice cooled soln.; recrystn. from boiling water;	34-37
With NaOH; Cl2 In water addition of Cl2 to NaOH soln.; adding saturated NH3 soln. and gelatine; evapn. to half volume; addition of H2SO4 to cooled soln.; precipitn. with alcohol;
With sodium hydroxide; sodium hypochlorite In water in presence of gelatine, addn. of H2SO4 in ice cooled soln.; recrystn. from boiling water;	34-37

ammonium bisulfate (7803-63-6) + hydrazine hydrate (7803-57-8) → hydrazinium sulfate (10034-93-2)

Conditions	Yield
1:1 molar ratio of educs reacted as described by K. C. Patil, R. Soundararajan, and V. R. Pai Verneker, Proc. Indian Acad. Sci., Sect. A, 1978,87, 281; 1979, 88, 211; K. C. Patil, R. Soundrarajan, and V. R. Verneker, Inorg. Chem., 1979, 18, 1969 et. al; elem. anal.;

monofluorourea (31775-57-2) + sulfuric acid (7664-93-9) → ammonium sulfite + fluoroammonium ion (646031-22-3) + hydrazinium sulfate (10034-93-2)

Conditions	Yield
In not given ratio of decompn. products depends on the temp. and concn. of H2SO4;

hydrazinium magnesium sulfate → magnesium sulfate (7487-88-9) + hydrazinium sulfate (10034-93-2) + hydrazine (302-01-2)

Conditions	Yield
at 302 °C dec. to give Mg(N2H4)SO4 and N2H6SO4, at 504 °Cproceed further endothermic dec.;

pentacyanonitrosylferrate(III) + hydrazinium sulfate (10034-93-2) → pentacyanohydrazineferrate(II)(3-)

Conditions	Yield
With NaOH; NaCl In water Kinetics; byproducts: NH3, N2O; hydrazine soln. contg. buffer and solid Fe complex mixed at 25.0°C, pH 6-10, ionic strength 0.1 M (NaCl); not isolated; monitored spectrophotometrically;	95%

barium 4,4'-oxybis[3,3'-(tetrazol-5-yl)]furazan + hydrazinium sulfate (10034-93-2) → dihydrazidinium 4,4'-oxybis[3,3'-(1H-tetrazol-5-yl)]furazan

Conditions	Yield
In water at 60℃; for 1h;	90%

barium(II) nitrate + sodium hydrogencarbonate (144-55-8) + hydrazinium sulfate (10034-93-2) → sodium nitrate (7631-99-4) + barium sulfate + hydrazine nitrate (13464-97-6)

Conditions	Yield
In water BaSO4 filtered off; neutralization; evapn. of filtrate at 40°C; drying over P2O5; N2H5NO3 sepd. from NaNO3 by melting (100-110°C) and extn. with MeOH;	A n/a B n/a C 87%
In water BaSO4 filtered off; neutralization; evapn. of filtrate at 40°C; drying over P2O5; N2H5NO3 sepd. from NaNO3 by melting (100-110°C) and extn. with MeOH;	A n/a B n/a C 87%

hydrazine hydrate (7803-57-8) + hydrazinium sulfate (10034-93-2) + barium 5,5′-azobistetrazolate → dihydrazinium 5,5'-azotetrazolate dihydrate

Conditions	Yield
In water mixt. of Ba-salt, N2H6SO4 and N2H4*H2O was stirred in water for 30 min under N2; filtered, allowed to crystd. overnight; elem. anal.;	87%

sodium tetrahydroborate (16940-66-2) + hydrazinium sulfate (10034-93-2) → hydrazine bisborane

Conditions	Yield
In tetrahydrofuran at 40℃; for 90h; Inert atmosphere; Glovebox;	87%

1-(ferrocene)prop-2-yn-1-one + hydrazinium sulfate (10034-93-2) → 3(5)-(ferrocen-1-yl)pyrazole

Conditions	Yield
With Na2CO3 In ethanol; water	85%

cis-aconitic anhydride (6318-55-4) + hydrazinium sulfate (10034-93-2) → (3,6-dioxo-1,2,3,6-tetrahydro-pyridazin-4-yl)-acetic acid (121073-74-3)

Conditions	Yield
In water	82%

sodium tetrahydroborate (16940-66-2) + hydrazinium sulfate (10034-93-2) → hydrazine monoborane (14931-40-9)

Conditions	Yield
In 1,4-dioxane at 30℃; for 48h; Inert atmosphere; Glovebox;	80.3%

hydrazinium sulfate (10034-93-2) + hydrazine (302-01-2) + barium 5,5′-azobistetrazolate → dihydrazinium 5,5'-azotetrazolate dihydrazinate

Conditions	Yield
In neat (no solvent) mixt. of Ba-salt, N2H6SO4, N2H4 was stirred for 4 h under N2; filtered, stored at 5°C overnight; elem. anal.;	76%

C5H5FeC5H4C(OC2H5)CHCHO + hydrazinium sulfate (10034-93-2) → 3(5)-(ferrocen-1-yl)pyrazole

Conditions	Yield
In ethanol; water	70%
In ethanol; water	70%

sodium tetrahydroborate (16940-66-2) + hydrazinium sulfate (10034-93-2) → hydrazine bisborane (13730-91-1)

Conditions	Yield
In tetrahydrofuran at 40℃; for 80h; Inert atmosphere; Glovebox;	69.9%
In tetrahydrofuran at room temp., 24h, filtration, evapn.;;	47%
In diethyl ether at room temp., 24h, filtration, evapn.;;	47%

oxygen (80937-33-3) + hydrazinium sulfate (10034-93-2) → nitrogen (7727-37-9) + water (7732-18-5) + dihydrogen peroxide (7722-84-1)

Conditions	Yield
With catalyst: brominated Pd/Al2O3 In further solvent(s) Kinetics; O2 reduced with hydrazine sulfate over halogenated Pd/Al2O3 catalyst at 25°C for 0.5 h in aq.H3PO4;	A n/a B n/a C 68%
With catalyst:Pd/Al2O3; KF or KCl or KI or KBr In water Kinetics; O2 reduced with hydrazine sulfate over Pd/C catalyst at 25°C in H2O with or without KF, KBr, KCl, or KI for 0.5 h;	A n/a B n/a C 0%
With catalyst: halogenated Pd/Al2O3 In water Kinetics; O2 reduced with hydrazine sulfate over halogenated Pd/Al2O3 catalyst at 25°C in H2O for 0.5 h;	A n/a B n/a C 0%
With catalyst: halogenated Pd/Ga2O3 In water Kinetics; O2 reduced with hydrazine sulfate over halogenated Pd/Ga2O3 catalyst at 25°C in H2O for 0.5 h;	A n/a B n/a C 0%

sodium metavanadate + water (7732-18-5) + sodium chloride (7647-14-5) + sodium hydroxide (1310-73-2) + hydrazinium sulfate (10034-93-2) → 5Na(1+)*22H2O*4H4N2*8H(1+)*V18O42Cl(13-)

Conditions	Yield
Stage #1: sodium metavanadate; water; sodium hydroxide at 85 - 90℃; for 0.5h; pH=8.5; Stage #2: hydrazinium sulfate for 1.25h; Inert atmosphere; Sealed tube; Stage #3: sodium chloride for 24h;	67%

tetraethylammonium Pt(pyridine)Cl5 (121538-75-8) + hydrazinium sulfate (10034-93-2) → tetraethylammonium Pt(pyridine)Cl3 (121538-77-0)

Conditions	Yield
In water byproducts: N2; heating with stirring (70-80°C, 5-10 min), addn. of H2O; filtn. (hot), pptn. on cooling, filtn., washing (H2O), drying (air); elem. anal.;	66%

sodium metavanadate + water (7732-18-5) + sodium hydroxide (1310-73-2) + hydrazinium sulfate (10034-93-2) → 7Na(1+)*21H2O*H4N2*8H(1+)*V19O46(15-)

Conditions	Yield
Stage #1: sodium metavanadate; water; sodium hydroxide at 85 - 90℃; for 0.5h; pH=8.47; Stage #2: hydrazinium sulfate for 1.25h; Inert atmosphere; Sealed tube;	63%

iron(II) chloride tetrahydrate + lithium hydroxide monohydrate (1310-66-3) + vanadia + hydrazinium sulfate (10034-93-2) → [Fe3V18.5O42(H2O)12(S0.5O4)]*24H2O

Conditions	Yield
In water addn. of aq. LiOH*H2O to aq. V2O5 at 84-86°C, addn. of hydrazinium sulfate, further heating (10 min), diln. with H2O, addn. of FeCl2*4H2O, heating 3-7 h; standing (stoppered flask, room temp., 12 h), filtration, washing (cold H2O), drying in air at room temp.;	56%

K8[Os2(μ-SO4)2(μ-O)2(SO4)4] + hydrazinium sulfate (10034-93-2) → [Os2(μ-SO4)2(μ-OH)2(H2O)4]

Conditions	Yield
In water Ar atmosphere; addn. of hydrazine sulfate to hot soln. of Os-complex, pptn. on evapn.; filtration, washing (water), drying (vac., over P2O5); elem. anal.;	55%

sodium azide + cobalt(II) sulphate heptahydrate + hydrazinium sulfate (10034-93-2) → Co(2+)*N2H4*2N3(1-)=[Co(N2H4)(N3)2]

Conditions	Yield
In water aq. soln. of hydrazine and Co satlt was heated at 93°C for 10 min; quickly mixed with hot aq. NaN3; kept at 93°C for 10 min; cooled to room temp. at rate 5°C/min; filtered; washed (H2O, EtOH); dried (vac.); elem. anal.;	52%

ammonium molybdate tetrahydrate + ammonium acetate (631-61-8) + water (7732-18-5) + acetic acid (64-19-7) + hydrazinium sulfate (10034-93-2) → 30C2H4O2*42H(1+)*(x)H2O*42H3N*Mo132O372(42-)

Conditions	Yield
Stage #1: ammonium molybdate tetrahydrate; ammonium acetate; water; hydrazinium sulfate for 0.166667h; Stage #2: acetic acid at 22℃;	52%

(5-bromo-10,15,20-triphenylporphyrinato)nickel(II) (67108-96-7) + hydrazinium sulfate (10034-93-2) → 5-amino-10,15,20-triphenylporphyrinatonickel(II) (915719-44-7)

Conditions	Yield
With catalyst: Pd(CH3CO2)2/BINAP/Cs2CO3 In tetrahydrofuran 68°C, 16 h;	51%

lithium hydroxide monohydrate (1310-66-3) + cobalt(II) sulfate hexahydrate + vanadia + hydrazinium sulfate (10034-93-2) → [Co3V18.5O42(H2O)12(S0.5O4)]*24H2O

Conditions	Yield
In water addn. of aq. LiOH*H2O to aq. V2O5 at 84-86°C, addn. of hydrazinium sulfate, further heating (10 min), diln. with H2O, addn. of CoSO4*6H2O, heating 3-7 h; standing (stoppered flask, room temp., 12 h), filtration, washing (cold H2O), drying in air at room temp.;	50%

sodium metavanadate + α-bismuth oxide + water (7732-18-5) + sodium hydroxide (1310-73-2) + hydrazinium sulfate (10034-93-2) + air → 6Na(1+)*34H2O*3H4N2*H8V15O36(CO3)(6-)

Conditions	Yield
Stage #1: sodium metavanadate; α-bismuth oxide; water; sodium hydroxide at 85 - 90℃; for 0.5h; Stage #2: hydrazinium sulfate for 0.25h; Stage #3: air for 24h;	50%

lithium borohydride + hydrazinium sulfate (10034-93-2) → hydrazine bisborane (13730-91-1)

Conditions	Yield
In diethyl ether at room temp., 24h, filtration, evapn.;;	47%
In tetrahydrofuran at room temp., 24h, filtration, evapn.;;	47%
In 1,4-dioxane at room temp., 24h, filtration, evapn.;;	47%

sodium molybdate dihydrate (7631-95-0) + sulfuric acid (7664-93-9) + water (7732-18-5) + sodium chloride (7647-14-5) + hydrazinium sulfate (10034-93-2) → Na48H16Mo368O1032(H2O)240(SO4)48*1000H2O

Conditions	Yield
In sulfuric acid; water N2H6SO4 added under stirring to Na2MoO4*2H2O in water acidified with H2SO4; stirred for 30 min; NaCl added; stored in a closed flask for 2 days; filtered off; elem. anal.;	23%

sodium molybdate dihydrate (7631-95-0) + sodium metavanadate + potassium chloride + hydrazinium sulfate (10034-93-2) → 12K(1+)*2Na(1+)*VO(2+)*12Mo6O21(H2O)3(SO4)(8.5-)*30MoO(H2O)(3+)*2SO4(2-)*150H2O=H432O555K12Na2S14VMo102

Conditions	Yield
With H2SO4 In water soln. of NaVO3 in H2O heated to 80°C, cooled to room temp., addedto aq. soln. of Na2MoO4*2H2O at room temp. pH 7.6, pH adjusted to 1 or 1.4 with H2SO4, treated with N2H6SO4, stirred at room temp. for 2 h, tre ated with KCl, 3 d; elem. anal.;	20%

sodium molybdate dihydrate (7631-95-0) + hydrazinium sulfate (10034-93-2) → Na(48-x)[H(x)Mo368O1032(H2O)240(SO4)48]*1000H2O

Conditions	Yield
With H2SO4 In water aq. soln. of Na2MoO4*2H2O acidified to pH 1 at room temp. with H2SO4, N2H6SO4 added, stirred for 30 min at room temp., left to crystd. for 3-5 d;	17%

1,10-Phenanthroline (66-71-7) + hexaammonium heptamolybdate tetrahydrate + water (7732-18-5) + hydrazinium sulfate (10034-93-2) → cis-Mo2O4(SO4)(1,10-phenanthroline)2*2H2O

Conditions	Yield
Stage #1: 1,10-Phenanthroline; hexaammonium heptamolybdate tetrahydrate; water In ethanol Stage #2: hydrazinium sulfate With sulfuric acid In ethanol at 120℃; for 24h; High pressure; Autoclave;	16%

1-phenyl-2-(acrylamidomethyl)-butane-1,3-dione (127089-61-6) + hydrazinium sulfate (10034-93-2) → [3-phenyl-4-(acrylamidomethyl)-5-methylpyrazole] (127089-64-9)

Conditions	Yield
With sodium acetate; acetic acid In water	80% by weight.

potassium bicarbonate + S-methyl-N,N'-bis-[2-((4-methyl-5-imidazolyl)methylthio)ethyl]isothiourea trihydrochloride + N,N-dimethyl-formamide (68-12-2, 33513-42-7) + hydrazinium sulfate (10034-93-2) → N-Amino-N',N"-bis[2-((4-methyl-5-imidazolyl)methylthio)ethyl]guanidine trihydrochloride

Upstream product

• 7664-93-9 sulfuric acid 
• 7664-41-7 ammonia 
• 7803-63-6 ammonium bisulfate 
• 7803-57-8 hydrazine hydrate 
• 31775-57-2 monofluorourea 
• 123-77-3 azodicarbonamide 
• 7727-37-9 nitrogen 
• 556-88-7 nitroguanidine 
• 3787-09-5 1,4-dihydro-1,2,4,5-tetrazine-3,6-dicarboxylic acid 

Downstream Products

• 7727-37-9 nitrogen 
• 10024-97-2 dinitrogen monoxide 
• 7664-41-7 ammonia 
• 7440-06-4 platinum 
• 7732-18-5 water 
• 7722-84-1 dihydrogen peroxide 
• 302-01-2 hydrazine 
• 7440-05-3 palladium 
• 74-90-8 hydrogen cyanide 
• 10035-10-6 hydrogen bromide 
• 7664-93-9 sulfuric acid 
• 10034-85-2 hydrogen iodide 
• 916329-38-9 hydrogen azide 
• 13863-88-2 silver(I) azide 

Relevant articles and documents

Synthesis and Characterisation of a New Sulphate Derivative of Hydrazine, N2H5HSO4

Hydrazinium(1+) hidrogensulphate, N2H5HSO4, has been prepared for the first time by the reaction of solid ammonium hydrogensulphate with hydrazine monohydrate.The compound has been characterized by chemical analysis, infrared spectra, and X-ray powder diffraction.Thermal properties of N2H5HSO4 have been investigated using differential thermal analysis and thermogravimetric analysis and compared with those of N2H6SO4 and (N2H5)2SO4.

Process for producing ketazine by reacting a ketone with ammonia and a peroxide

Ketazines having the general formula (I) STR1 wherein R1 represents alkyl group having 1 to 4 carbon atoms and R2 represents (i) an alkyl group having 1 to 4 carbon atoms or (ii) a phenyl group optionally substituted with an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or a halogen group, and R1 and R2 together with the carbon atom to which they are both bonded may form a ring, are advantageously manufactured by reacting an aliphatic or aromatic ketone having the formula (II) STR2 wherein R1 and R2 are as defined above, with ammonia and a peroxide compound or compounds in the presence of amorphous silica or palladium compounds, as a catalyst, at a temperature of from 0° to 120° C., in a liquid phase.